Notice:
The advice given on this site is based upon individual or quoted experience, yours may differ.
The Officers, Staff and members of this site only provide information based upon the concept that anyone utilizing this information does so at their own risk and holds harmless all contributors to this site.
Depth finder transducers do not need to be mounted with a hole through the hull. All you really need to do is epoxy the transducer to the inside of the hull. My preferred location is at the aft end of the V-berth compartment near the bulkhead.
Notice: The advice given on this site is based upon individual or quoted experience, yours may differ. The Officers, Staff and members of this site only provide information based upon the concept that anyone utilizing this information does so at their own risk and holds harmless all contributors to this site.